Results 181 to 190 of about 3,574 (224)
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The Northern Terminus of Cascadia Subduction
Journal of Geophysical Research: Solid Earth, 2020AbstractThe Juan de Fuca (JDF) plate system is pivoting and breaking apart as a result of resistance to subduction. At the northern end, the Explorer (EXP) plate moves independently of the JDF plate along the Nootka Fault Zone (NFZ), which forms an unstable triple junction with the JDF ridge and the Sovanco Fracture Zone.
G. Savard +5 more
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An Earthquake Nest in Cascadia
Bulletin of the Seismological Society of America, 2019AbstractWe investigate an isolated cluster of temporally persistent, intraslab earthquakes (ML<3.2) at >60 km depth below the Georgia Strait in southern British Columbia that is unique in Cascadia and meets the criteria for identification as an earthquake nest.
Reid Merrill, Michael Bostock
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Intraslab Earthquakes: Dehydration of the Cascadia Slab
Science, 2003We simultaneously invert travel times of refracted and wide-angle reflected waves for three-dimensional compressional-wave velocity structure, earthquake locations, and reflector geometry in northwest Washington state. The reflector, interpreted to be the crust-mantle boundary (Moho) of the subducting Juan de Fuca plate, separates intraslab earthquakes
Leiph A, Preston +4 more
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The Productivity of Cascadia Aftershock Sequences
Bulletin of the Seismological Society of America, 2021ABSTRACTThis study addresses questions about the productivity of Cascadia mainshock–aftershock sequences using earthquake catalogs produced by the Geological Survey of Canada and the Pacific Northwest Seismic Network. Questions concern the likelihood that future moderate to large intermediate depth intraslab earthquakes in Cascadia would have as few ...
Joan Gomberg, Paul Bodin
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2023
The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Bloch, W., Bostock, M., Audet, P.
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The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Bloch, W., Bostock, M., Audet, P.
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Moment release rate of Cascadia tremor constrained by GPS
Journal of Geophysical Research, 2009 A comparison of GPS and seismic analyses of 23 distinct episodic tremor and slip events, located throughout the Cascadia subduction zone over an 11-year period, yields a highly linear relationship between moment release, as estimated from GPS, and total ...
Ana C․ Aguiar, Timothy I Melbourne
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Deep Sea Research and Oceanographic Abstracts, 1969
Abstract The transport of sediments from shallow water by turbidity currents and their deposition within Cascadia Channel in the northeast Pacific Ocean have created a unique environment. Thick organic-rich turbidity current deposits of postglacial age in Cascadia Channel contrast markedly to the thin, less rich, hemipelagic clays overlying clean ...
G.B. Griggs, A.G. Carey, L.D. Kulm
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Abstract The transport of sediments from shallow water by turbidity currents and their deposition within Cascadia Channel in the northeast Pacific Ocean have created a unique environment. Thick organic-rich turbidity current deposits of postglacial age in Cascadia Channel contrast markedly to the thin, less rich, hemipelagic clays overlying clean ...
G.B. Griggs, A.G. Carey, L.D. Kulm
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Transborder Cascadia: Opportunities and obstacles
Journal of Borderlands Studies, 2004The issue of the continuing significance of borders within North America provides a good basis for analysis of changes in-and our understanding of-the nature and impact of national boundaries early in the 21st century. The recent literature on borders runs a gamut from the emergence of "a borderless world" and the end of the nation state (Ohmae 1990/1,
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